汽车产业中的职业技术教育研究

汽车产业是我国的支柱产业,为了落实国家《现代职业教育体系建设规划(2014-2020年)》精神,满足汽车产业经济运行和发展对职业技术人才的需求,通过研究汽车产业经济的职业教育目标指向、如何适应产业经济运行、引领产业经济发展等问题,采用对汽车产业经济结构、产业经济链的结构、科学技术结构、职业教育中学科与专业结构的分析研究,找到了"经济运行维持类"、"科学技术进步类"、"产品创新发展类"职业教育模式,还找到了汽车产业经济链、核心技术、专业课、专业基础课、基础课之间关联结构。对汽车产业高等职业教育具有积极作用。     

Site occupation and energy transfer in full color emitting phosphor Ba2Ca(BO3)2:Ce3+(K+),Eu2+,Mn2+

White light-emitting diodes (WLEDs) fabricated by single-phase full color emitting phosphor are an emerging solution for health lighting. The crystallographic site occupation of activators in a proper host lattice is crucial for sophisticated design of such phosphor. Here, we report a high quality white light-emitting phosphor Ba₂Ca(BO₃)₂:Ce³⁺(K⁺),Eu²⁺,Mn²⁺ with spectral distribution covering whole visible region. Blue light emission originates from Ce³⁺ ions occupying preferentially Ba²⁺ site by controlling synthesis conditions. Green and red lights are obtained from Eu²⁺ occupying Ba²⁺ (and Ca²⁺) site and Mn²⁺ occupying Ca²⁺ site, respectively. In this triple-doped phosphor, strong red emission with a low concentration of Mn²⁺ is realized by the efficient energy transfer from Ce³⁺ and Eu²⁺ to Mn²⁺. Furthermore, high quality white light is accomplished by properly tuning the relative doping amount of Ce³⁺(K⁺)/Eu²⁺/Mn²⁺ based on efficient simultaneous energy transfer. The results indicate that Ba₂Ca(BO₃)₂:Ce³⁺(K⁺),Eu²⁺,Mn²⁺ is a promising white light-emitting phosphor in WLEDs application.     

隧道施工中环境保护及劳动安全的探讨

论述了隧道施工中的环境保护、职业病、劳动安全、建立环境保护监测和评价体系等问题 ,提出了施工中必须注意的问题及解决的办法 ,以引起大家对国家有关环境保护及劳动安全的法律法规的重视。     

青岛德国警察署旧址研究

青岛德占时期的建筑形式和风格,充分反映了欧洲和德国当时的建筑流派所带来的影响。文章以德国警察署旧址建筑为研究对象,从建筑的角度对其进行了详细的分析论述,并进一步评价了其在青岛近代史上的地位和历史价值。     

螺旋升流式反应器的流态特性及流动模型研究

通过示踪试验以及计算流体力学软件Phoenics3．6对SUFR系统单元反应器的流态特性以及流动模型进行了研究。结果表明，SUFR反应器兼有推流与全混流的特点；SUFR单元反应器内的水流以螺旋方式行进，有助于反应器形成推流特征；SUFR单元反应器内的流动模型可以看作8个单元反应器串联而成，其中推流单元反应器与全混流反应器间隔排列，推流流态的容积占有率约为63％，其推流特征较为明显。     

Investigation of Nd3+ incorporation in Ce-rhabdophane: Insight from structural flexibility and occupation mechanism

LnPO₄ · 0.667H₂O rhabdophane has been considered as a potential material for the precipitation of actinides from radioactive waste liquid, owing to its outstanding characteristics of high actinide bearing and easy synthesis in acid solutions. However, a comprehensive understanding of the actinide occupation and the precipitation response of rhabdophane to remove actinides has yet to be established. In this study, the effect of ions concentration and pH values on the detailed precipitation reaction of Ce_xNd_1-xPO₄ · 0.667H₂O rhabdophane in acid solutions are systematically investigated. Some specific issues such as structural distortion and flexibility, and occupation mechanism are discussed by combining with experiments and density functional theory (DFT) calculation. The results reveal that ions concentration and pH values have a significant impact on the crystallization nucleation step before 12 h. The obtained removal rate of Nd³⁺ is more than 99% in pH 1–5 solutions with the ions concentration of 0.05–0.1 mol/L. Moreover, incorporating Nd in CePO₄ · 0.667H₂O rhabdophane will easily result in the lattice distortion in b-axis. DFT calculation and X-ray photoelectron spectroscopy (XPS) results reveal that Nd is preferentially incorporated in nonhydrated site to form a weaker binding energy of NdO₈ polyhedron.     

时效工艺对Ni75Al15Ti10合金沉淀过程的微观相场模拟

本文通过微观相场动力学模型模拟了Ni₇₅Al₁₅Ti₁₀合金的沉淀过程。首先通过原子演化图发现,沉淀过程分为两步,起初为L1₀相向L1₂相的转变,随后为化学计量比L1₂相的形成。随后研究了单级时效温度对微结构,原子占位以及原子扩散的影响,结果表明：随着温度升高无规则形状的γ′相变为规则立方体状并且择优取向显著;同时Al原子从γ′相界面向内部扩散,Ti原子正好相反。但是温度越高,原子占位以及有序化程度越低。为了提高γ′相的原子占位,我们进一步比较了双级时效对γ′相的影响。发现双级时效不仅能获得规则排列稳定的γ′相,同时还可以提高Al与Ti原子在其正位处的原子占位并抑制反位缺陷的产生。我们的实验结果在一定程度上为制备具有优异力学性能的Ni-Al-Ti合金提供了理论依据。     

Gender and support for creativity at work

Although innovation is vital for the success of organizations, many may not be capitalizing on the creativity of all workers. Gender bias in attributions of creativity may lead to an imbalance in the extent to which organizations support the creativity of men and women. Because organizational support for creativity is positively associated with creative outcomes, this may undermine the creativity of women in the workplace. To determine if gender influences creative workplace behavior through support for creativity, conditional process models were used to analyze the survey responses and external employment data of workers (N = 14,590) across industries in the US. Our analyses demonstrate that men report greater support for creativity in the workplace than women, and greater support for workplace creativity leads to more frequent creative workplace behaviors. The proportion of women employed in an industry influences this relationship, such that differences between men and women become smaller as the proportion of women in an industry increases. However, the level of creativity required in an occupation does not influence the relationship between gender and creativity. The theoretical and practical implications of these results are discussed.     

我国油气矿业权使用费制度改革的几点思考

我国实行矿业权有偿取得的制度。自1998年《矿产资源勘查区块登记管理办法》《矿产资源开采登记管理办法》规定了矿业权使用费标准和缴纳方式以来,油气矿业权使用费制度一直未发生变化。2017年国务院印发《矿产资源权益金制度改革方案》中提到了将使用费整合为占用费。本文通过梳理我国油气矿业权使用费的收缴现状,分析目前我国油气矿业权使用费制度存在的问题,在此基础上提出了我国油气矿业权占用费制度改革的政策建议。     

论高职酒店管理专业学生职业能力的培养

通过对高职酒店管理专业学生职业能力的内涵分析、职业能力构成和培养现状的具体分析,提出了对学生职业能力培养的一些建议和策略,并探讨了以职业能力培养为核心的考评体系的相关设计。